Hello, syzbot found the following issue on: HEAD commit: 58f9416d413a Merge branch 'ice-support-to-dump-phy-config-.. git tree: net-next console+strace: https://syzkaller.appspot.com/x/log.txt?x=12e2e3e1980000 kernel config: https://syzkaller.appspot.com/x/.config?x=db697e01efa9d1d7 dashboard link: https://syzkaller.appspot.com/bug?extid=d5dc2801166df6d34774 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1658c7dd980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16ed24b5980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/3fb480f5ebf6/disk-58f9416d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1a62eb04b3aa/vmlinux-58f9416d.xz kernel image: https://storage.googleapis.com/syzbot-assets/67d14a897f84/bzImage-58f9416d.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d5dc2801166df6d34774@xxxxxxxxxxxxxxxxxxxxxxxxx wlan1: authentication with 08:02:11:00:00:00 timed out ================================================================== BUG: KASAN: slab-use-after-free in __lock_acquire+0x78/0x1fd0 kernel/locking/lockdep.c:5005 Read of size 8 at addr ffff88805e5cfe10 by task kworker/u8:8/2405 CPU: 1 PID: 2405 Comm: kworker/u8:8 Not tainted 6.10.0-rc6-syzkaller-01414-g58f9416d413a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Workqueue: events_unbound cfg80211_wiphy_work Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 __lock_acquire+0x78/0x1fd0 kernel/locking/lockdep.c:5005 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] lockref_get+0x15/0x60 lib/lockref.c:50 dget include/linux/dcache.h:333 [inline] simple_recursive_removal+0x35/0x8e0 fs/libfs.c:601 debugfs_remove+0x49/0x70 fs/debugfs/inode.c:823 ieee80211_sta_debugfs_remove+0x40/0x60 net/mac80211/debugfs_sta.c:1287 __sta_info_destroy_part2+0x35e/0x450 net/mac80211/sta_info.c:1476 __sta_info_destroy net/mac80211/sta_info.c:1492 [inline] sta_info_destroy_addr+0xf4/0x140 net/mac80211/sta_info.c:1504 ieee80211_destroy_auth_data+0x139/0x270 net/mac80211/mlme.c:4163 ieee80211_sta_work+0x1256/0x3850 net/mac80211/mlme.c:7801 cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440 process_one_work kernel/workqueue.c:3248 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> Allocated by task 57: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3940 [inline] slab_alloc_node mm/slub.c:4002 [inline] kmem_cache_alloc_lru_noprof+0x139/0x2b0 mm/slub.c:4021 __d_alloc+0x31/0x700 fs/dcache.c:1624 d_alloc fs/dcache.c:1704 [inline] d_alloc_parallel+0xdf/0x1600 fs/dcache.c:2462 __lookup_slow+0x117/0x3f0 fs/namei.c:1677 lookup_one_len+0x18b/0x2d0 fs/namei.c:2764 start_creating+0x187/0x310 fs/debugfs/inode.c:378 debugfs_create_dir+0x25/0x430 fs/debugfs/inode.c:593 ieee80211_sta_debugfs_add+0x132/0x820 net/mac80211/debugfs_sta.c:1262 sta_info_insert_finish net/mac80211/sta_info.c:881 [inline] sta_info_insert_rcu+0xecf/0x1900 net/mac80211/sta_info.c:949 sta_info_insert+0x16/0xc0 net/mac80211/sta_info.c:954 ieee80211_prep_connection+0xecd/0x12d0 net/mac80211/mlme.c:8319 ieee80211_mgd_auth+0xd42/0x14c0 net/mac80211/mlme.c:8564 rdev_auth net/wireless/rdev-ops.h:485 [inline] cfg80211_mlme_auth+0x59f/0x980 net/wireless/mlme.c:291 cfg80211_conn_do_work+0x5ed/0xe60 net/wireless/sme.c:181 cfg80211_conn_work+0x27c/0x4d0 net/wireless/sme.c:271 process_one_work kernel/workqueue.c:3248 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329 worker_thread+0x86d/0xd50 kernel/workqueue.c:3409 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Freed by task 0: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2196 [inline] slab_free mm/slub.c:4438 [inline] kmem_cache_free+0x145/0x350 mm/slub.c:4513 rcu_do_batch kernel/rcu/tree.c:2535 [inline] rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2809 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637 irq_exit_rcu+0x9/0x30 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 Last potentially related work creation: kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541 __call_rcu_common kernel/rcu/tree.c:3072 [inline] call_rcu+0x167/0xa70 kernel/rcu/tree.c:3176 __dentry_kill+0x497/0x630 fs/dcache.c:622 dput+0x19f/0x2b0 fs/dcache.c:845 find_next_child fs/libfs.c:594 [inline] simple_recursive_removal+0x2bd/0x8e0 fs/libfs.c:609 debugfs_remove+0x49/0x70 fs/debugfs/inode.c:823 ieee80211_debugfs_remove_netdev net/mac80211/debugfs_netdev.c:1022 [inline] ieee80211_debugfs_recreate_netdev+0xc4/0x1400 net/mac80211/debugfs_netdev.c:1044 drv_remove_interface+0x1e1/0x590 net/mac80211/driver-ops.c:119 _ieee80211_change_mac net/mac80211/iface.c:278 [inline] ieee80211_change_mac+0xaf5/0x11e0 net/mac80211/iface.c:310 dev_set_mac_address+0x327/0x510 net/core/dev.c:9095 dev_set_mac_address_user+0x31/0x50 net/core/dev.c:9114 dev_ifsioc+0xbd9/0xe70 net/core/dev_ioctl.c:541 dev_ioctl+0x719/0x1340 net/core/dev_ioctl.c:786 sock_do_ioctl+0x240/0x460 net/socket.c:1236 sock_ioctl+0x629/0x8e0 net/socket.c:1341 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f The buggy address belongs to the object at ffff88805e5cfd60 which belongs to the cache dentry of size 312 The buggy address is located 176 bytes inside of freed 312-byte region [ffff88805e5cfd60, ffff88805e5cfe98) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5e5ce head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffefff(slab) raw: 00fff00000000040 ffff888015ef98c0 ffffea0000930c80 dead000000000002 raw: 0000000000000000 0000000000150015 00000001ffffefff 0000000000000000 head: 00fff00000000040 ffff888015ef98c0 ffffea0000930c80 dead000000000002 head: 0000000000000000 0000000000150015 00000001ffffefff 0000000000000000 head: 00fff00000000001 ffffea0001797381 ffffffffffffffff 0000000000000000 head: 0000000000000002 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 1, migratetype Reclaimable, gfp_mask 0xd20d0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_RECLAIMABLE), pid 4552, tgid 4552 (udevd), ts 33320668518, free_ts 17328144731 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1473 prep_new_page mm/page_alloc.c:1481 [inline] get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3425 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4683 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x5f/0x120 mm/slub.c:2265 allocate_slab+0x5a/0x2f0 mm/slub.c:2428 new_slab mm/slub.c:2481 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3667 __slab_alloc+0x58/0xa0 mm/slub.c:3757 __slab_alloc_node mm/slub.c:3810 [inline] slab_alloc_node mm/slub.c:3990 [inline] kmem_cache_alloc_lru_noprof+0x1c5/0x2b0 mm/slub.c:4021 __d_alloc+0x31/0x700 fs/dcache.c:1624 d_alloc+0x4b/0x190 fs/dcache.c:1704 lookup_one_qstr_excl+0xce/0x260 fs/namei.c:1603 filename_create+0x297/0x540 fs/namei.c:3907 do_symlinkat+0xf9/0x3a0 fs/namei.c:4514 __do_sys_symlink fs/namei.c:4542 [inline] __se_sys_symlink fs/namei.c:4540 [inline] __x64_sys_symlink+0x7e/0x90 fs/namei.c:4540 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 1 tgid 1 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1093 [inline] free_unref_page+0xd22/0xea0 mm/page_alloc.c:2588 free_contig_range+0x9e/0x160 mm/page_alloc.c:6642 destroy_args+0x8a/0x890 mm/debug_vm_pgtable.c:1017 debug_vm_pgtable+0x4be/0x550 mm/debug_vm_pgtable.c:1397 do_one_initcall+0x248/0x880 init/main.c:1267 do_initcall_level+0x157/0x210 init/main.c:1329 do_initcalls+0x3f/0x80 init/main.c:1345 kernel_init_freeable+0x435/0x5d0 init/main.c:1578 kernel_init+0x1d/0x2b0 init/main.c:1467 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff88805e5cfd00: 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb ffff88805e5cfd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88805e5cfe00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805e5cfe80: fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88805e5cff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
